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| bio | website | |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 2 years, 10 months |
| seen | Jun 10 at 13:21 | |
| stats | profile views | 44 |
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Apr 23 |
awarded | Notable Question |
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Oct 30 |
answered | Solving a division with imaginary numbers |
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Oct 24 |
comment |
When does a higher order polynomial have complex roots? I think mac389 is asking about non-real roots (all real numbers being complex numbers too). |
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Oct 17 |
revised |
continuously differential parametrization of a tricky surface added 277 characters in body |
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Oct 17 |
answered | continuously differential parametrization of a tricky surface |
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Oct 16 |
comment |
Positive and Negative Real numbers yes, but only when x is positive |
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Oct 16 |
answered | Positive and Negative Real numbers |
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Sep 10 |
awarded | Nice Question |
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Sep 4 |
awarded | Enlightened |
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Sep 4 |
awarded | Nice Answer |
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Aug 24 |
awarded | Yearling |
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May 7 |
awarded | Nice Answer |
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May 4 |
revised |
How Can One Prove $\cos(\pi/7) + \cos(3 \pi/7) + \cos(5 \pi/7) = 1/2$ added 595 characters in body |
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May 3 |
answered | How Can One Prove $\cos(\pi/7) + \cos(3 \pi/7) + \cos(5 \pi/7) = 1/2$ |
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Apr 12 |
comment |
Isn't there a bijection between real numbers and natural numbers? I think you are misunderstanding what a real number is. Your mapping is to the integers Z (the positive and negative whole numbers + 0). A real number is (roughly) any number that can be written as a decimal with possibly infinite digits after the decimal point (the actual definition is more technical). |
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Mar 14 |
awarded | Nice Question |
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Dec 5 |
awarded | Popular Question |
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Aug 25 |
awarded | Yearling |
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Jul 26 |
answered | Coloring dodecahedron |
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May 10 |
answered | Good (Auto)Biographies of von Neumann and other physicists/mathematicians |
